Also if the answer is challan 281 then what is the code we need to select under nature of payment - is it 94J?
and what option should we select for Tax Applicable - is it (0020) Company Deductees or (0021) Non-Company Deductees?
for Type of Payment*do we choose (200) TDS/TCS Payable by Taxpayer or (400) TDS/TCS Regular Assessment?
Finally, what is the due date to deposit the tax - we did TDS for Jan's salary on Feb 1 when the Jan salary was paid to the person? - so is the due date to deposit TDS Feb 7 or Mar 7? Is there anything else we should know or be aware of? Thank you.
From India, Bengaluru

Monthly TDS due dates, challan to be used , and quarterly return submission dates of TDS calendars are handled by the CA only
Going by your description it appears your TDS will be under 94C (@ 1-if the deductee is a Proprietor or 2% Partnerships & Cos.). 94J is meant to Professional advice, Tech.services/ assistance etc @ 10%.
Step by step compliance on the Net banking portal of your banker's web site:
Open the portal > login >select Direct or Indirect Tax > select Co user or Others > select TDS > select bank name & A/c > Assessment Year > Input PAN & TAN No. Check whether your firms' name displays > type the amount of TDS to be remitted > submit to bank > see bank a/c No. & your latest logged in details appear > enter your login & Transaction PW > submit > then your paid challan is displayed. Click on pdf format print, take a print for your file. It's over. Use the details for filing your IT -TDS Qly Returns also.
Re: due dates etc. pl.see the info in the following links for the next few months.
https://eztax.in/tax-compliance-calendar-it-tds-gst-roc
From India, Bangalore