For a better "planning constraints" understanding

Hello,

After using ProjeQTor since few month, I have sometimes (often) difficulties to understand how ProjeQTor manage the planning constraints

Exemple 1

I have a fixed milestone (01/02/2017)



I have an activity with theses parameters



Milestone and activity are linked together



I don't understand why my activity is planned to start the 02/02 and not the 01/02 ? A milestone don't have any durantion also my activity should be start the 01/02, isn'it ?
(I don't input any delay between milestone and start of my activity




Exemple 2

This same activity has a duration of 3 days

When I affect a ressource with an assigned work of 1 day......the duration (on the graphical gantt ) become 1 day too -but stay 3 days on the activity description

For me, it is not the reality : I have to work 1 day but distributed on a duration of 3 days : how is it possible to have this graphical representation ?

I tried to use another planning constraint "fixed duration", I keep my duration when I assigned 1 day work for a ressource....but I can't also define that my activity don't start before a validated date .
If I do that, I lost also again my duration (ont the graphical gantt)

Can someone explain me what is wrong with my process ?

Thanks

babynus wrote:

Exemple 1
I don't understand why my activity is planned to start the 02/02 and not the 01/02 ? A milestone don't have any durantion also my activity should be start the 01/02, isn'it ?

It is because Activity has no assigned work.
Add some assigne work and activity will start on correct date (ProjeQtOr is effort driven)

dnaton wrote:

Sorry but why this method ? with or without assigned work, milestone don't have any duration, no ?
First, when I create a project (but maybe is it only me), I enter only duration and dependancies betwenn activities, to have an idea of the global duration of my project. After, I enter assigned work.
I understand it is how works Projeqtor today, but is it difficult or possible in the future to start an activity the same day as the milestone ?

babynus wrote:

Exemple 2
For me, it is not the reality : I have to work 1 day but distributed on a duration of 3 days : how is it possible to have this graphical representation ?

You mismatch Duration and Work.
With planning mode ASAP, work will be planned ASAP...
What you expect is done with plannong mode "fixed duration"

dnaton wrote:

I'm not sure to mismatche duration and work : an activity can have a duration of 5 days for example, but with only 1 day work : this 1 day work is distributed all the 5 days duration. As Project Manager, I know that my activity is planned for 5 days (for different reasons) but has only a work of 1 day.
Actually, if I use "Fixed duration", I keep the right duration if I assign 1 day work, but I can't also no more fix a start date without the lost of the right duration.
And If I use the "ASAP constraint", I lost the duration if I assign a work (the same if I use "no start before this date" constraint