To get this in single player, you have to get each profile type to rank 6 once. When you reset your stats, the profile will also reset. I don't think it is possible to get this done on all profiles at once as you would need a very large amount of skill points.
On the Tempest ship in the medbay is the respec option. You need to use this to reset your skill points. I did it at level 54, but I have read you can do it from level 47.
Unless you plan to respec anyway, I would recommend making a manual save before going for this so you can revert back. Not only do you have to rebuild with your preferred specs, but you also spend credits for each respec and it gets a little more expensive each time. Note, the game makes an auto save after each respec so don't expect to roll back to an old auto save as it will probably be overwritten.
Basically you need to max out each of the 3 Skill trees. Then get around half Combat and half Biotics. half Combat and half Tech. Around half Biotics and half Tech. Then evenly spend points in all 3.
If you pause and go into Profiles, looking at each one gives you the required skill points needed spent and where to get to the next rank. You could spent the exact amount each one needs and the respec, or use the video that I followed to save having to go into the profile menu each time to verify the requirements