When taking an Action, move the leftmost Influence Disc from your Influence Track to the Action Space on your Action Track corresponding with the chosen Action. Stack subsequent Influence Discs on top of any already occupying an Action Space; the same Action may be taken multiple times.
The possible Actions are:
Explore
Upgrade
Move
Research
Build
Influence
Reaction: Upgrade, Build, or Move
Note: There is an example of a full Action Phase linked below.