Dears prefer DSC mode always, proceed e-PPA Mode only if your approver don't have any Digital Signature. e-PPA Method is not advisable because its taking too much process time and lacks results...
Handout link.. https://drive.google.com/file/d/1iAHX...
Click link for SOP of e-PPA Mode... https://drive.google.com/file/d/1rAka...