You select both mods in the FCS and create a new mod. This will be your patch mod and it will have the two mods as a requisite (naturally you would need to also include the creature mods). I also usually open the original mod(s) on new instances of FCS as when you edit your patch mod you cannot see the changes the original mod made in color text, so it easier to reference to them by opening the original one(s) on separate FCS.

Then the adding to the creatures is as simple as finding the character/squad file of each creature you want to add the dialogue to and adding the dialogue to them.

Both of the original mods already add the dialogues to vanilla NPCs, so you need to also open(tag) the creature/race mod right at the start when creating your patch mod, so all the creature mods, the NPC mods and the RP and TB need to be tagged when making your mod.

You can use the 'set field' tool to add a thing to all selected files.

1) Go to the listing of the file type. In this case the character tab.
2) Select all the characters you want to add the dialogue (if you have low RAM I do not recommend selecting more than 50 files at once).
3) Right-click and pick 'set field'
4) On the panel that opens, left drop down menu, choose dialogue
5) on the right drop down panel find the dialogue(s) you want to add to them
6) hands off while it operates
7) Save and test in game


Do note, that a character can have only one dialogue pack, so if that character already has a dialogue pack, you need to add the dialogue inside their dialogue pack and set the conditions so that the TB or RP are only operational in certain conditions. Cause the player talk option(s) are randomly selected if there are multiple player talk options in a character's dialogue pack.