I don’t know what kind of macro you want to set. If you are simply summoning water babies, then ESC and click Macro Settings, then click New, give a name and select the icon, and then enter in the edit bar
/release to summon water elements
Then just drag the icon into the action bar. .
SHIFT left mouse button is to click the skill in the spell book while the spell book is open. Clicking on a skill in the action bar has no effect.
Hope this helps. If you still have questions, you can continue to ask questions. Happy gaming.