Before setup integration with Shopee / Tokopedia at https://marketplace.dealpos.app/, you should create 1 user for Marketplace, you can name it "Marketplace". This user should be given full access to It's group so the user can access all menus on DealPOS.
Step 1. Add new Group on user menu
Example : I create group by the name Marketplace.
Step 2. on Group form Access setting For Marketplace select full access then Save
Step 3. Create New user for marketplaces then save
On new user config select group marketplace and assign outlet for User.