Add function in existing EA

In attached EA I want to have following cahnges.

What does EA - EA does place pendings - every xMinutes new pendings with definated lots sice.

1. Chart - add following informations

 a. Summ of all buy orders in Lots

 b. Summ of all sell orders in Lots

 c. difference of oversice to be equal  - in chart should be written - Order sell of 4.65 lots to be equal - buy or sell should be written

Update in sets - every X minutes

2. add function for lot amount  placing in pending

EA does have in Sets - Set - Lot_sice - this lot sice will be used for opening pending order Lot sice - New function should can be selected - If not selected EA does place as it does right now.

I want to have another lot opening amount calculation - together wit point c. difference of oversice (calculation which is shown in chart)

For the Oversice Direction should be used under c calculated lots - but only if they are higher as in Set input _Lot_sice - if oversice is less than Lot_sice in set use Lot_sice. For other direction of course use Lot_sice as EA does use actuall right now.

Explanation:

In chart should be every x minutes be updatet amount of all buy and sell orders in market.

So for example we have

open buy orders in market - 6.23 lots

and open sell order in Market - 4,00

so differenc ist sell order 2.23

this means in direkction of sell - EA should not open as right now - EA should open 2.23 lots but only if the amount is lower then in set.

3. I want that EA does close all orders on Friday bevore closing and restart when market will be open. - Function set activ or inactiv - If inactiv it works as it does right now.