Does Professional CRM license allow field and related list security control?
Ans. Yes!
Zoho CRM Professional Edition allows Field-level security. In order to setup Field Level Security, Goto --> Zoho CRM --> Settings --> Customisations --> Modules and Fields --> Select appropriate Module --> Click on Fields on the top --> Then click on "Field Permissions" --> Provide appropriate Field Level Permissions. = Refer to Screenshot.
Screenshot:
2.
Does the Professional license allow you to hide related lists,
specifically those created by synching Zoho Inventory, from certain
users?
Ans. Yes!
However, the main catch here is that the Zoho Inventory Related Lists falls
completely under the Zoho Finance Modules List. So you will be able to
restrict the Permissions in viewing the Inventory related details based
on Profile Level Permissions in Zoho CRM which will reflect the same
inside the Related Lists column for Zoho Finance. = Refer to Screenshot.
Screenshot: