Official rule text
89.2 STEP 2—MOVEMENT: The active player may move any number of ships that have a sufficient move value from any number of systems that do not contain one of their command tokens into the active system, following the rules for movement. a Ships that have capacity values can transport ground forces and fighters when moving. b The player may choose to not move any ships. c After the “Move Ships” step, all players can use the “Space Cannon” abilities of their units in the active system.
View official source
Source: Living Rules Reference and FAQ - Prophecy of Kings
Expansion: Prophecy of Kings
Version: 2.0
Reference: Rule 89.2