Hello Vikas

According to what you need to achieve (label above or next to checkbox you could use one of these.

{ div class="row" colspan="2" }
	{ div class="col" }{ label for="f2f" / }{ field name="f2f" / }{ /div }
	{ div class="col" }{ label for="branch" / }{ field name="branch" / }{ /div }
	{ div class="col" }{ label for="digital" / }{ field name="digital" / }{ /div }
{ /div }

Or

{ div colspan="2" }
	{ div class="row" }
		{ div class="col" }{ label for="f2f" / }{ /div }
		{ div class="col" }{ label for="branch" / }{ /div }
		{ div class="col" }{ label for="digital" / }{ /div }
	{ /div }
	{ div class="row" }
		{ div class="col" }{ field name="f2f" / }{ /div }
		{ div class="col" }{ field name="branch" / }{ /div }
		{ div class="col" }{ field name="digital" / }{ /div }
	{ /div }
{ /div }