Here is a full example with a small data frame.
DF <- data.frame(Name = c("Jack", "Jack", "Paul"),
Hours= c(1,1,1),
Claims = c(1,1,1))
library(dplyr, warn.conflicts = FALSE)
DFsummary <- DF %>% group_by(Name) %>%
summarize(Hours = sum(Hours), Claims = sum(Claims))
DFsummary
#> # A tibble: 2 x 3
#> Name Hours Claims
#> <fct> <dbl> <dbl>
#> 1 Jack 2 2
#> 2 Paul 1 1
Created on 2020-08-01 by the reprex package (v0.3.0)