Have you ever created a new Outlet on DealPOS and when you go to the Buy menu to restock your inventory, you don't see the Outlet you just added? Take it easy because the outlet option for Enabled Buy is not activated by default when you add an outlet. So you need to activate it by doing the configuration which will be explained in the explanation down below:
Step 1. Go to Outlet Menu - Select Outlet
Step 2. Tab Configuration - Buy Enabled - Yes - Update
Step 3. Check on Buy Menu
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If you want to apply the purchase method with 2 steps of verification, you can do it at DealPOS by configuring the setup, you can check the detailed explanation in this article: How to Activate Approval when using Buy (2 steps).
To change the default payment to Later on the BUY menu, you can check this article for the setup: How to Select Default Payment in Buy.
For COGS calculation in DealPOS, we have several calculation methods, including Average, LastOrder, and Manual. To set up, the COGS Calculation, go check this article: Setting Up Product's COGS Calculation.