milestone time relation

i have the luck to be planning my own milestone (and not being victim of client's time)

so, what i do is to create a list of milestones aimed to complete my project in the long term.

after i am done with making the list, i go to report>milestone view to review my work flow on a time line.

Now, here i may realize that too many milestones overlap in the same period, or the sequence in time is just not right, therefore i'd need to change each milestone dates.

If (as in my case), the milestone are meant to happen sequentially (one after the other), moving one ms date could mean change ALL of them.

it's a huge waste of time.
MS project would let create relation between tasks.
maybe for zoho that doesnt really fit.

but we could at least make it easier to change dates for milestones
if, for example, i could move the green bars left and right with the mouse
directly on the report view?
or, select it, then with UP -DOWN key adding/removing 1 day to it?

if you try to make a plan for your own project now, you'd realize it's very hard process.
thanks
jacopo3001