p. 238 of the Player Core says:
WEARING TOOLS: You can make a set of tools (such as a maker’s toolkit or medkit) easier to use by wearing it. This allows you to draw and replace the tools as part of the action that uses them. You can wear up to 2 Bulk of tools in this manner; tools beyond this limit must be stowed or drawn with an Interact action to use
Problem: Currently, you can only equip tools specifically to hands, but you don’t need a Toolkit in your hand to wear it.
Solutions:
Easy: Add the generic Equip button to toolkits and medkits, and we can make sure we only have 2B of tools equipped.
Hard: add a “Wearing” tab to Equipment for Toolkits.