--- title: Creating a Custom/Process Assembly Product description: Within the Edit Product window, set the Bill of Materials type to be "Assembly (Custom/Process)". Next, add a list of default components under the Components tab. Mark any products that can be modified or removed in an assembly to be "Variable". --- [Skip to content](https://hub.acctivate.com/articles/learn/product/create-a-custom-assembly-product#main-content) [Go to Customer Portal](https://hub.acctivate.com/tickets?hsLang=en) ![Acctivate - A CAI Solution](https://hub.acctivate.com/hubfs/Images/Logos/acctivate-cai-logo-svg.svg) - [Knowledge Base](https://hub.acctivate.com/articles) Open main navigation Close main navigation - [Knowledge Base](https://hub.acctivate.com/articles) - [Go to Customer Portal](https://hub.acctivate.com/tickets) - [Support Resources / Create Ticket](https://acctivate.com/support) [Support Resources / Create Ticket](https://acctivate.com/support) Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://hub.acctivate.com/articles?hsLang=en) 2. [Inventory](https://hub.acctivate.com/articles/inventory?hsLang=en) 3. [Assemblies](https://hub.acctivate.com/articles/inventory?hsLang=en#assemblies) April 10, 2025 # Creating a Custom/Process Assembly Product ## Within the Edit Product window, set the Bill of Materials type to be "Assembly (Custom/Process)". Next, add a list of default components under the Components tab. Mark any products that can be modified or removed in an assembly to be "Variable". The **Custom / Process Manufacturing** add-on module is designed to manage the design, specifications and production of configurable products. It allows a configurable bill of material (BOM) to be easily established for **custom and process-built products**, which can be adjusted appropriately to record the actual build. This article covers creation of the Custom and process Assembly item. Acctivate supports both **build-for-stock** and **build-to-order** manufacturing.  This article focuses on build-for-stock inventory using **Custom/Process Assemblies**.  Build-to-order manufacturing is accommodated by **Custom Kits**. **Creating an Assembly (Custom) Product** 1. Select **Inventory \> Product Information** from the Acctivate desktop or click the **Product icon** to open the **Product Information** window. 2. Click the **New** button. 3. In the **Product ID** field enter a product ID for the new product. 4. In the **Description** field enter a description for the product. 5. Fill in all the remaining required fields which are highlighted in Edit mode for new items. 6. Set the **[Bill of Materials](https://help.acctivate.com/articles/5583/)** field to **Assembly (Custom) or Assembly (Process).** 7. To add a warehouse, click the **Add Warehouse** button in the **Inventory** tab. 8. Select the appropriate warehouse from the drop-down menu in the **Add Product to Warehouse** window followed by **Add**. 9. Repeat this step for each warehouse, if you will have multiple warehouses. 10. In the **Components** tab of this new product, the various pieces need to be entered line-by-line with a quantity set for each item. These items must exist in the Acctivate database to be added as a component. Mark any component that can be removed or modified on the assembly itself as **Variable**. 1. The Labor component is marked as variable in the below screen shot since it could take longer than an hour to build the item, but no more/less legs or tabletops. ![variable-component](https://help.acctivate.com/wp-content/uploads/Variable-Component.png) 11. When all the components have been added to the assembly product, click the **Save** button. We now have a new Custom or Process item. 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