How to use MeshLab to label a point cloud file (PLY or TXT) and an SMPL-H human body mesh file with multiple tags?

[WLY567765]

For example, if I want to label an SMPL-H human body model with two different types of tags, how should I do it? Should I use two different colors? And how to label a point cloud with two tags? I noticed that it seems impossible to directly label a point cloud. I hope the final exported point cloud file format is a 2D array, where the first three columns are coordinate information, and the following columns for each point are the tag information. How should I export this format of file? please give me some advice