it depends on what anemone you want to keep. Other than BTA, if you keep an anemone happy, it will not move. All bets are off with BTA, they seem to move without reason at times.
In order to keep anemone in reef tank, you need to know about the habit and preference of the anemone. Will you have a sand bed or able to accommodate sand bed dwelling anemone? and other factors... light current........
Here is a picture of one of my 65 gallon tanks. It was full of SPS but due to the overgrowth of the SPS I took most of it out. In this tank, there are 2 H. malu (Malu anemone), 2 S. gigantea (Gigantea anemone), 2 S. tapetum Maxi (Maxi-mini carpet), countless S. tapetum mini (mini-mini carpets) and one small E. quadricolor (BTA). As my anemones get larger, they do sting some of the adjacent corals. Also as the SPS growth, It start to shade my anemones so I have to prune them. At the end, I decided to do the mother of all prune which is to remove 3/4 of my corals, include the entire R side and the top of the L side as it was growing our of the water.
An island right under the light with a flat, smooth rock on top and plenty of circulation works well for H. magnifica, but will not work for other host anemones. You got to now enough about anemones to choose which species then go from there.