How to create “template”?
As you know each new chart in the metatrader is opened according default preferences= color, indicators, type of chart, and so on). If you want create your own default template you must:
Adjust settings of chart and save the received template as default.tpl. … Charts > Template > Save Template
How Can I close a part of position?
If you do NOT want to close the whole your position you able to close the position only partially. You must:
Click on the “close position” by the right mouse button, and type (!) the size of a lot, that you’d like tocloase manually… done! 
How to save chart in picture?
If you’d like to save current chart as picture and show it on forum for example you must:
1 Click on chart by the right mouse button
2 choose the “Save as picture” in the menu,
2 choose required size of picture (screenshot).