These questions actually relate to the portfolio optimization template and not the monitoring template. To respond to the points raised:
Ranking assets can be done by modifying returns in the correlation matrix before optimization. Higher expected future returns will force higher weightings depending on risk (standard deviation).
We can set minimum and maximum constraints to set some assets to be the same weight as current thereby essentially removing them from optimization.
Once optimization has run, we can select points along the efficient frontier to a selected risk amount for example.
Setting a minimum weighting of 30% for one asset will constrain the optimization to have at least that weighting.
