In the incursion... It sez "donate resources" where do you direct said donations?
There are four kinds of donation nodes: action points, goods, troops, and coins/supplies.
If it is an action points node then there will be 1 simple button to click. Click away until your action points are drained. Note that this option does not have 2x progress!! It's an easy way to use up your actions bar but not much progress in return.
If it's a coins/supplies node then there will be 2 buttons and one of them will show a "2x" to indicate which gives a bonus on the node.
If it's a goods node then there will be 5 buttons and two of them will have a "2x" to indicate bonuses.
If it's a troop node then there will also be 5 buttons and also two marked with "2x" to indicate bonuses.
In each case you simply click the corresponding buttons to what you have to donate, and donate away.
There's also a "MAX" in the upper right with a checkbox. You can use that to donate the max amount of coins, points, supplies, goods, or troops in your inventory with a single click after activating the MAX.