If this is the Pathfinder by Roll20 sheet, buffs use that temp imput on stats, so you can't mix them. However, it probably depends on what buffs you are running. If you have stat boosting items, you might think about putting the buffs in the config tab under racial stat bonuses and then list what is giving the boost as a note field (accessed by the cog) under the stat. That would free up the temp input, if that is where your stat buffs are coming from. If you have a long running spell buff that is being offset by a spell (or whatever debuff), it might just be best to make a custom buff with the negative values that will then be used in the calculation of your ending stat. If you are using the community sheet, you can disregard all that.