dodging

Just a few quick questions. Does the aperture on the enlarger lens have anything to do with exposure time. For example if you were at f/8 at 10 seconds would f/5.6 at like 5 seconds would give you the same exposure. And should i use a smaller aperture if I'm planning 0n dodging and burning.

Hi, I've been reading about dodging and burning and found it difficult to understand; "dodging decreases the exposure for areas of the print that the photographer wishes to be lighter, while burning increases the exposure to areas of the print that should be darker." If the exposure is...