Application Rationalization Process. An application rationalization process typically involves the following phases: 1) Asset Identification: Each application in the portfolio is to be evaluated to determine. its value and its costs, with the help of workshops and analysis activities.
24 to 48 Hours. You should wait at least 24 hours before grouting the tiles. You may notice that the edges of the thinset or the thinset showing through the grout lines looks dry. Don't be fooled by this. The thinset under the tiles isn't receiving as much air as the edges and is therefor not fully cured.
If you do not have the luxury of time, I recommend a fast setting mortar. Many of these can be grouted in 3-4 hours. Maybe add a little time for special circumstances, but you are still way ahead in time. I set glass tile (impervious) over waterprofing in my kitchen with Grani Rapid and the stuff could not be moved after 3 hours.