The Access settings for Post forms are configured at Toolset > Access Control > Toolset Forms, by expanding the section for front-end Post forms.
That section is currently broken. The checkboxes don’t respond to clicks, and horizontal scrolling to see settings that don’t fit the page does not work.
Solution:
This issue is fixed in the latest version of Toolset Access plugin 2.8.10, you can download it here:
Problem: I'm having problems where I cannot add new custom fields in Types, and I cannot adjust Access Control settings in wp-admin.
Solution: Update to the latest version of Access to solve the checkboxes and scrolling issues. Increase your server's max_input_vars setting to resolve the problem where new fields cannot be added.