Natural attacks Question

[gicusoxi]

Hello,
How do I make Natural attacks Chains and Tail Slap count as adamantine. the natural attacks were created via template [natural attacks]

[ploturo]

Is there some other ability that you are trying to get herolab to also apply, or is it just to note that the attacks count as adamantine?

There is a built-in adjustment to rename natural attacks, so that you could add Adamantine to the name of the natural attack.

[Dami]

Attacks generally aren't associated with a material. In HL, (like in a Bestiary) this would normally be shown as a Special Ability for a creature that says something like "Attacks made by XXX are treated as being adamantine."
You can also make it part of the attack name as ploturo suggests.

[Ualaa]

If you temporarily go (Control + K) and change the character to an NPC.
Or leave it on NPC, if that is what they are.

You can click Customize on the Background tab, to the right of the Racial dropdown.
Check box, Racial Special Abilities.

There's a good chance you can add something somewhere in there.
It has all the Bestiary and Books that you have on your license... so if there's anything in a Monster (Bestiary) book that has the feature you want, it will be there somewhere.