how to create and assign layer info

Development Asset Creation
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1

Hi im looking to see if anyone is able to help me with a problem i got when it comes to creating landscapes.

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i have managed to create my materials so i have them in my paint option, but i still cant paint cause i need to assign a layer info and wondering if there is anyone that knows how to fix it?

2

I realize this is 2 years late. But have you figured this out? When i click creat “create layers from assigned materials”, my plus signs are greyed out and I’m not sure how to resolve this.