Hello,
I would like to install R 3.4.4 and the latest version of R (currently (3.6.1) on the same Mac Machine and I would like to use alternatively both under R studio.
On a Win machine this procedure is quite easy: I install both versions on the same directory then I use Tools > Global Options and under R General > Rsession > R Version I can easily switch from one version to the other. On a Mac machine, I installed the same two R version and, in the end, R studio but it is possible to choose just one version because the "R version" option is not present as in Windows.
Can you help me in solving this problem?